OrangeFS: constify export_operations structures

This export_operations structure is never modified, so declare it as const.
Most other structures of this type are already const.

Done with the help of Coccinelle.
Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: Mike Marshall <hubcap@omnibond.com>

fs/orangefs/super.c

@@ -342,7 +342,7 @@ static int orangefs_encode_fh(struct inode *inode,
 	return type;
 }
 
-static struct export_operations orangefs_export_ops = {
+static const struct export_operations orangefs_export_ops = {
 	.encode_fh = orangefs_encode_fh,
 	.fh_to_dentry = orangefs_fh_to_dentry,
 };